alt Hacker NewsMillisecond trading strategies have zero relationship to information about companies or economic fundamentals and are therfore not economically productive. They're exploiting microstructure inefficiencies like latency arbitrage, order front-running, not price discovery. That's not 'teaching' the market it's a tax on everyone else's execution. The fact that it's legal doesn't make it structurally useful. It is just a result of the rules not being updated when trading became automated at superhuman speeds
> Millisecond trading strategies have zero relationship to information about companies or economic fundamentals and are therfore not economically productive
It is not clear to me that the only economically productive information is "information about companies or economic fundamentals."
If I know some idiot is willing to pay 100x what a company is actually worth, that is economically productive because it gives me, someone better with money, a ton of resources that formerly were controlled by someone who didn't know how to leverage the assets in an economically productive manner. IT's the same argument as allowing adverse possession: transfer of assets from non-productive owners to productive owners, benefiting society as a whole.
With this, I've established a third kind of data beyond "economic fundamentals" and "information about companies."